If more substrate to already occurring enzymatic reaction is added and there is no effect on the rate of the reaction what is the form given to this situation___________?
Correct answer: A. Saturation
- A. Saturation
- B. Denaturation
- C. Composition
- D. Inhibition
Explanation
When adding more substrate no longer increases the reaction rate, the enzyme's active sites are saturated and are already occupied by substrate molecules. The likely mistake is choosing inhibition, but inhibition reduces enzyme activity through an inhibitor rather than through simple exhaustion of available active sites.
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About Factors Affecting Enzyme Action
Enzyme activity changes with temperature, pH, substrate concentration and enzyme concentration because these factors affect molecular collisions and the active site. Questions also examine optimum conditions, denaturation and inhibition, while distinguishing a fall in activity caused by unsuitable conditions from permanent enzyme damage.
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